I think the red lit cockpit is far more important in ROTJ.
First of all it is night and it has headlights by the guns.
I think removing the red cockpit in ROTJ would look awful.
But if the glass is tinted red when you shine white light through it it will appear red from outside.
It is a very small thing but it is a bit of a tricky one. You could easily wipe from a red filter to normal color to show the red window de-activating.
You can not show a red light on in the cockpit